Senior Blockchain Engineer - Backend for Enterprise Web3

11037 Citibank, N.A. United Kingdom; England; Hybrid; GBP 95,000 - 135,000; Full time

Benefits offered by this job

27 days annual leave

Discretional performance bonus

Private Medical Care & Life Insurance

Employee Assistance Program

Pension Plan

Paid Parental Leave

Employee discounts

Job summary

Citi London is seeking a Senior Blockchain Engineer to join the Digital Assets Platform engineering team. You will build backend web applications in Java, work on Citi Integrated Digital Assets Platform (CIDAP), and contribute to web3 infrastructure in an enterprise setting.

The role requires hands-on development with Ethereum-style web3 tooling, a strong enterprise mindset, and collaboration across global teams. Citi offers hybrid work with generous benefits.

Qualifications

• Extensive experience in full software development lifecycle.

Responsibilities

• Collaborate on web applications using blockchain tech.
• Own end-to-end delivery of backend features.
• Address solution engineering challenges to meet stakeholders’ needs.
• Apply best practices and design patterns for enterprise and web3 apps.
• Maintain technical documents and contribute to codebase.

Skills

Backend Java development

Web3 / blockchain

Enterprise software engineering

Distributed team collaboration

Data structures & algorithms

Education

Bachelor's in CS/Engineering

MS/PhD a plus

Tools

Web3J

Web3JS

Git/Jira/Jenkins

Containerization (Docker/Kubernetes)

Job description

Citi London is seeking a Senior Blockchain Engineer to join the Digital Assets Platform engineering team. You will build backend web applications in Java, work on Citi Integrated Digital Assets Platform (CIDAP), and contribute to web3 infrastructure in an enterprise setting.

The role requires hands-on development with Ethereum-style web3 tooling, a strong enterprise mindset, and collaboration across global teams. Citi offers hybrid work with generous benefits.